福建农业科技2023，Vol.54Issue(11)：24-30,7.DOI:10.13651/j.cnki.fjnykj.2023.11.004
4种生物农药对玉米田草地贪夜蛾的田间控制效果
Field Control Effect of Four Kinds of Biological Pesticides on Spodoptera frugiperda in Maize Fields
摘要
Abstract
Spodoptera frugiperda,an important migratory insect in the world,has been a serious threat to maize production in China since its invasion.Although the chemical prevention was efficient and urgent,it was also easy to cause the drug resistance and environmental safety of Spodoptera frugiperda.In order to reduce the usage of chemi-cal pesticides,the indoor toxicity determination of different pesticides to Spodoptera frugiperda larvae was carried out,and the field efficacy trials of the four kinds of biological pesticides on Spodoptera frugiperda on maize were studied and evaluated.The results showed that:the efficacy of the four kinds of biological pesticides,including 20 billion spores·g-1 Beauveria bassiana oil-based suspension concentrate,30 billion spores·g-1 Beauveria bassiana wettable powder,8000 IU·uL-1 Bacillus thuringiensis suspension agent and 1％ Sophora flavescens·azadirachtin emulsion,was 78.29％-85.84％,60.70％-82.81％,73.06％-81.89％and 73.18％-83.19％,respectively,after 7 days of application.The four kinds of biological pesticides had no adverse effect on the maize growth,no phy-totoxicity,no growth-promoting effect,and no obvious adverse effect on the beneficial organisms in maize fields.This study showed that the four kinds of biological pesticides,including 20 billion spores·g-1Beauveria bassiana oil-based suspension concentrate,30 billion spores·g-1Beauveria bassiana wettable powder,8 000 IU·uL-1 Bacillus thuringiensis suspension agent and 1％Sophora flavescens·azadirachtin emulsion,could effectively control the dam-age of Spodoptera frugiperda after 7 days of application,and could be widely used in the maize fields with low den-sity population.关键词
生物农药/玉米/草地贪夜蛾/毒力/药效Key words
Biological pesticides/Maize/Spodoptera frugiperda/Toxicity/Efficacy分类
农业科技引用本文复制引用
赵建伟,李建宇,田厚军,刘其全,邱良妙..4种生物农药对玉米田草地贪夜蛾的田间控制效果[J].福建农业科技,2023,54(11):24-30,7.基金项目
福建省人民政府、中国农业科学院"5511"协同创新工程(XTCXGC20211011) （XTCXGC20211011）
福建省财政专项——福建省农业科学院科技创新团队建设项目(CXTD2021002-1). （CXTD2021002-1）
